private protected TResult Wait <TResult>(Task <TResult> pending, Message message)
{
if (!redis.TryWait(pending))
{
throw ExceptionFactory.Timeout(redis.multiplexer, null, message, server);
}
return(pending.Result);
}
public bool MoveNext()
{
switch (state)
{
case State.Complete:
return(false);
case State.Initial:
ProcessReply(parent.GetNextPageSync(this, nextCursor));
pageIndex = parent.initialOffset - 1; // will be incremented in a moment
state = State.Running;
LoadNextPageAsync();
goto case State.Running;
case State.Running:
// are we working through the current buffer?
if (SimpleNext())
{
return(true);
}
// do we have an outstanding operation? wait for the background task to finish
while (pending != null)
{
if (parent.TryWait(pending))
{
ProcessReply(pending.Result);
}
else
{
throw ExceptionFactory.Timeout(parent.redis.multiplexer, null, pendingMessage, parent.server);
}
if (SimpleNext())
{
return(true);
}
}
// nothing outstanding? wait synchronously
while (nextCursor != 0)
{
ProcessReply(parent.GetNextPageSync(this, nextCursor));
if (SimpleNext())
{
return(true);
}
}
// we're exhausted
state = State.Complete;
return(false);
case State.Disposed:
default:
throw new ObjectDisposedException(GetType().Name);
}
}
